A drug test is technically an analysis of a biological specimen to determine the occurrence or absence of specific drugs. The specimens used are urine, hair, blood, sweat, or oral fluid/saliva. Most of the tests are used to detect the occurrence of steroid which is prohibited in sport or cannabis, cocaine, and heroine which are breaking the laws. Mainly, there are three major drug testing methods: urine drug testing, spray (sweat) drug testing Read more...